Timber preservative.



re-561 es 792M555 110.792358. Patented June 13, 1905.

NITED STATES PATENT OFFICE- SPECIFTCATION forming part of Letters PatentNo. 792,458, dated June 13, 1905.

Application filed December 2, 1903. Serial No. 183,494. 7

To whom it y W Germ.- bestos diffused in the mass is obtained to per- 1Be it known that 1, RAssnLAs' PATTERSON mit all the ingredients toassimilate more REYNOLDS, a citizen of the United States, and readily,and permanently to form a coating a residentof Walla Walla, in thecounty of containing the ingredients well mixedv in all 1 sf 5WValla-walla and State of Washington, have its parts. 35 i invented anew and Improved Timber Pre- It is understood that the proportion of theservative, of which the following is a full, several ingredients asabove given is varied clear, and exact description. according to the usemade of the treated tim- The object of the invention is to provide aher. For instance, when the timber is to be I new and improved timberpreservative or "iused for ordinary underground purposes then 4 coatingfor rendering the timber proof against the amount of the coal-tar may beabout doudecay when used above or under ground. bled. Y

The composition consists of the following Having thus described myinvention, Iclaim ingredients, in about the proportions speci- :as newand desire to secureby LettersPatent- I5 lied, namely: coal-tar, eightparts; Portland $1. The herein-described timber preserva- 45 cement, onepart; asbestos, (flour,) one part; tive, consisting of coal-tar,Portland cement, sulfur, one part; nesin, one part; creosote, asbestos,creosote, and a medium for holding refined, one ouncefhf'ibiir ouncescrude ereothe cement and asbestos diflused in the mass, sote. as setforth.

2 The above-mentioned ingredients are thor- 2. The herein-describedtimber-preserva- 5 oughly boiled in a caldron or vat for about tive,consisting of coal-tar, Portland cement, ten minutes after theboiling-point is reached, asbeistgs'sulfur, resin, and creosote in aboutand then the timber is immersed for, say, the proportions specified. "aabout five iiiinutes in the boiling mass to In testimony whereofIhavesigned my name i 5 form a coating on the timber. The coated to thisspeeifieationinthepresence of two sub- 55 timber is then'removed and thecoating alscribing witnesses.

lowed to dry and harden before using the tim- RASSELAS PATTERSQAREYNOLDS. ber. Witnesseszii l 31. v. V 1

By employing sulfur and resin a very ef- STEPHEN B. L. PENROS o ieientmedium for holding the cement and as ALLEN LL iIOLDS. l

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